| http://www.w3.org/ns/prov#value | - s??? is an integer of 1 to about 6; t??? is an integer of 0 or 1; r??? is an integer of 1 to about 3; and Rf is selected from the group consisting of ???CqF2q+1 and ???(CxF2xO)zCyF2y+1, where q is an integer of 1 to about 6, x is independently an integer of 1 to about 10 for each (CxF2xO), y is an integer of 1 to about 8, and z is an integer of 1 to about 5; with the proviso that there are at leas
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